Access Easy Controller 2.1 Appendix F Frequently Asked Questions | en 125
Robert Bosch (SEA) Pte Ltd Hardware Installation Manual 2018.11 | 1.0.6 | F.01U.122.796
Example 3: Transaction shows “Access Denied - Passback”, this shows that the employee did
not present the card to the exit reader when the employee exited from the door (the
employee could have followed someone through the door).
23.4 Inputs and Outputs
Question - Can the controller also monitor doors that do not have readers connected to them,
such as emergency exit doors?
Answer - Yes. We would install contacts on these doors and connect them to an 8-Input-
Output board. The AEC2.1 can support up to four of these boards. Each board is capable of
monitoring eight points of protection. Depending on specific controller configuration, an
expansion chassis may be needed to house the 8-IO board(s).
Question - What is the maximum wire length between 8-IO board and an alarm sensor?
Answer - When using standard 22-gauge burglar alarm cable, the maximum cable length is
500m.
Question - Can glass break detectors be connected directly to an input on the 8-IO board?
Answer - No. In most instances, this will not work. The reason is because alarms from many
glass break detectors are often of very short duration. The AEC2.1 circuitry must see the alarm
condition exist for 500 ms before it will recognize and respond to the alarm.
Glass break sensors should be wired to a controller, and the controller should provide the
connection to AEC2.1.
23.5 Network Question
Question - How many computers can be connected to the AEC2.1 at the same time?
Answer - Typically, only one computer is connected to the AEC2.1 at a time. However, the
controller will continue to provide satisfactory performance with two concurrent user sessions
running.
Bosch Security Systems recommends that concurrent controller logins be limited to two to
provide rapid response to user requests for information. While the controller will handle more
than two concurrent logins, the users may notice degradation in the speed with which screen
pages are drawn when there are multiple simultaneous logins to the controller.
Question - What is the maximum cable length between the AEC2.1 and the network hub to
which it is connected.
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